HSMS-281L-TR1G

RF Diode Overview

The HSMS-281L-TR1G is a surface mount RF Schottky barrier diode from the HSMS-281x series, manufactured by Broadcom Limited (formerly Agilent Technologies). It features an unconnected trio configuration housed in a SOT-363 package. Key electrical specifications at 25°C include a breakdown voltage of 5V, a maximum forward voltage of 400mV at 1mA, and a typical capacitance of 1.2pF at 0V reverse bias. The device offers low flicker noise and high isolation characteristics suitable for precision analog and digital applications.

RF Diode Feature Summary

• Low flicker (1/f) noise performance optimized for sensitive signal processing
• High degree of matching between paired or quad devices due to adjacent wafer site manufacturing
• Six-sigma quality level with low failure in time rate
• Lead-free construction available

RF Diode Applications

• Analog switching circuits requiring low noise
• Digital logic interfaces
• RF detection and mixing applications
• Precision instrumentation front-ends

RF Diode Procurement Notes

Verify the specific ordering suffix 'TR1G' corresponds to the 7-inch reel quantity of 3000 units as documented in the official datasheet. Confirm the 'G' suffix indicates lead-free compliance. Ensure the component matches the HSMS-281L unconnected trio variant within the SOT-363 package outline before procurement.

RF Diode Selection Notes

Select this component when low flicker noise is critical compared to the HSMS-282x series. Choose the HSMS-281L specifically for unconnected trio configurations. Consider the HSMS-280x series if higher breakdown voltage is required, noting its higher series resistance. Verify that the SOT-363 footprint aligns with the PCB layout guidelines provided in the assembly instructions.

RF Diode Part Context

This part belongs to the HSMS-281x family of surface mount Schottky diodes. The family includes single, dual, and quad versions such as HSMS-2810 through HSMS-2818 and their SOT-323/SOT-363 counterparts. The HSMS-281x series is distinguished by lower 1/f noise compared to the HSMS-282x series, making it suitable for hybrid Schottky applications where noise performance is prioritized over current capacity.

RF Diode Replacement Considerations

Direct substitutes within the same family include other HSMS-281x variants like HSMS-281K (High Isolation Unconnected Pair) or HSMS-281B (Single) if the pinout and configuration allow. Cross-family replacements like HSMS-282x are possible but offer different electrical characteristics, specifically higher series resistance and noise profiles.